216412085 has 8 divisors (see below), whose sum is σ = 268071936. Its totient is φ = 167544720.

The previous prime is 216412073. The next prime is 216412087. The reversal of 216412085 is 580214612.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 216412085 - 2⁴ = 216412069 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (216412087) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 697949 + ... + 698258.

It is an arithmetic number, because the mean of its divisors is an integer number (33508992).

Almost surely, 2^216412085 is an apocalyptic number.

It is an amenable number.

216412085 is a deficient number, since it is larger than the sum of its proper divisors (51659851).

216412085 is a wasteful number, since it uses less digits than its factorization.

216412085 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1396243.

The product of its (nonzero) digits is 3840, while the sum is 29.

The square root of 216412085 is about 14710.9511929039. The cubic root of 216412085 is about 600.3813177951.

Adding to 216412085 its reverse (580214612), we get a palindrome (796626697).

The spelling of 216412085 in words is "two hundred sixteen million, four hundred twelve thousand, eighty-five".